Any chance one or more of your students is a writer, editor, or publisher who could compile your posts, transcribe interviews and videos, help you with an outline and editing, and take of the administrative details? A lot of very good books by very busy people are written with a tiny mention of a co-author on the cover.
Actually, if it happens, that's likely to be the way it does. The editor who helped Ellis is a former student of mine and a friend. But he's a professional so the more I hand over, the more expense I have out of pocket. But it is not out of the question. I have put many hundreds of hours into my on-line writings and that represents a giant head start on a book if I would cull all of that for what is useful. Anyway, we'll see... definitely do not hold your breath on this one.